Ultrahigh-resolution scanning microwave impedance microscopy of moire lattices and superstructures.

ABSTRACT: Two-dimensional heterostructures composed of layers with slightly different lattice vectors exhibit new periodic structure known as moiré lattices, which, in turn, can support novel correlated and topological phenomena. Moreover, moiré superstructures can emerge from multiple misaligned moiré lattices or inhomogeneous strain distributions, offering additional degrees of freedom in tailoring electronic structure. High-resolution imaging of the moiré lattices and superstructures is critical for understanding the emerging physics. Here, we report the imaging of moiré lattices and superstructures in graphene-based samples under ambient conditions using an ultrahigh-resolution implementation of scanning microwave impedance microscopy. Although the probe tip has a gross radius of ~100 nm, spatia

SUBMITTER: Lee K 

PROVIDER: S-EPMC7725474 | biostudies-literature | 2020 Dec

REPOSITORIES: biostudies-literature